Steam-heating apparatus.



H. C. MALLORY. STEAM HEATING APPARATUS. APPLICATION IILED AUG. 7, Lwa. BENEWED NOV. 1, 1913.

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H. C.MALLORY.

STEAM HEATING APPARATUS.`

` PPLIOTION FILED AUG. 7, 1,098,81 5.

r1908. RENBWED NOV. 1, 1918.

Patented June 2, 1914.

2 SHEETS-SHEET 2.

WIWSSES panying drawings and descriptive matter in ...3 linlet" passage 'B andati its lower.

STATES PATENT; OFFICE.

. r Limiti-mman or NEW YORK', 'NI Y.

I- l. Specification of Letters Patent.

STM-HEATING aunar-rus.-

= .Patentedinea .19145 Apbiianoa mdngustv, isos, serial no. 44 .7,a7v2. Renewed Nvenbs-rfijisisff sensi mi. gaande.'

To all whom itmay concern:

B it/'known that I, Hanni C. MALIQRY, u citizen'of the United States of America, residi Vin the city, county, and State of ,New-[frh haveA inventeda,. 0ertain new nnduseful Improvement in Steam-Heating Apparatus, of which the following is a'true .end exact description,reference being had to' theaccompanying drawings, which 4form a art thereof. f

'presentinvention ,relates to steam heating `apparatus in which thermostatic ineclianisinis .provided for regulatingthe flo'v i, `f ,steam through the radiators'or other heating vlle i l ices ofthe system, and particularly `tosue h apparatus inawhich the ther- 1nostat-ic .-Ihechanism :is s'o' arranged. that iihilepQpepe normally as a temperature regulating it also operates as a' thermostatie steam trap to prevent 'the useless .escaof steanifrom the radiator. I *The-o ject ofthe.l invention. is to provide -a novelthermostatic mechanism of the kind described having excellent mechanical `and operating properties. The .various features of novelty which 'characterize my. invention are pointed out e; with ,fparticularity ir. claims annexed toV and forming` apart of'this specification, but for a' fbetterfunderstanding of the invention, however, andof the advantages possessed by: it, Yreferencemay be had-to the accomwhich I have .illust-rated and described variousgiormsf in which my invention may be embodied.

Of the drawings: Figure 1 is an elevation ofa portion of a. steamradiator equippedwith Aone form of :controlling mechanism \'vhic h shownin section. Fig. 2.is.a sec`- tionen the lin`e2--2 of Fig. l.-` Fig. 3 is a section on thejline 3 -3 of Fig. 1. Fig. 4

"fis ajplan view of'adetail of the thermostatic mechanism employed in the construction of Figs..1 2 and 3, and Fi'g." 5 is an .elevation partly in seotionshojwing a radiator vand controlling mechanism- .diifering somewhat. u'flmlthatshown 1in-Figs. /1-4. Fig 6.is a sectional plan onthe line .ofoE-ig. 5. `lFi'g. 7' is a .perspective view .of the adjusting keygfn'd Fig. 8" is a .plan ofthe eipansiblel mechanism mld in Fig. 5g

fthe 'drawings'and' referring first te instruction shown in Figs 1 v tao-4 inclusive,-` A represents .a portionof al'lsteamtradiator'f of u sual' form provided at- .its upper'. end

the-bottom ofvalve casing DMA. in'

4 the valve casing.A urges the valve toward its seat. v A.; rotatable is in communie'ation .1 withthe "outlet chainber D1v of the .valve casing D. .The outlet '6c chamber D1l vand .inlet 'chamber' D! ,of the valve Dl are separated .by the ported valve seat member-D?, which/husa .conical valve seat or -port -D passing tliroughjit.` The steam supply pipe. (not shown) is connected to the chamber -D2 by the port-DF".1 The, valve! E controlling theport D ishollovv andplis l.guided ..by'a ;tubular ginember.- D threaded linto. a1iopening -forined in the lower Wallgf-casingjD. A valveoperating rod El; threaded into yandclosing the' l sage iii valve-E E2 `above themembe D' l passes downthrough thelatter and .throu lil,

z passing through a Slot-'in the inem r'E, 7.5` prevents rotation of the. rod E?. relative -to A spring E normally.

key Ds mounted in. a caf Dinclosin'gf .the

'upper/end of 'tasing D, avingfallattened 80 loweiend adapted .to 4enter a .slot.or'y ke formed in -'the upper end oi thefval-ve ,serves as a means for 4rotatin-T the vvalveon the'threadedsteinE1 to adjust the valve.' A coupling 'part F-'is securedato the radiator .A85 outlet 'C and forms the 'bottom-'of "a 'chamber in whichy the thermostatic nieelianism' for; 'operat-iiigvalve E is located. `The partiF is open at itsy lower Vend to: theesca-pe conduit G, which may lead to the atmosphere or 90'. i

preferably in most casesto'a pump .or other: pressure ovveringde vice.` vAtitslnpper end the part Ff is open to theinteriorY .of a .tubular member H'wliieh forms the upperpart of a chamber yinc losing the thermostat-io .exy95 ,pansible mechanism. The member-VH.' has .gauges H4 .ne as endsgwhich abut againstupperandlower bushingsH1 andH re-A spectively, formed of=xnaterial 'such as comv pressed fibencornponnd having poor heat conductivity.l` The' bushingsHvand H? bear against the adjacent endsof the valve-casing* D Aand :fittings 'F"' frespectively'and 'are clamped in placefby collarsD10 andFl re speetively... `These)collars are lheld out'of 105 heat-transferriZ Vrelation with the ilanges. l{*.by}.washers -'of thesame materialjas the bushings Hlfn-nd A tubular 'mem-: V

v bei` .Ifhaving an fgoutturned flange J yadapted to, bearagainst.thelunder side of thel biish.-

LingH'- is centrally disposedl v'vithinI the. f-

nieinber ,l-I. and extends to. a point :adjacent the upper end of the latter.-y )Within the" tube I tube K and within the tube K and securedto it at its lower end is a tube L'. The tube L hasl secured. in its upper end a bushing L' of material ofpoorheat conductivity, like the bushings H1 and HL To the bushing L is secured the valve o eratingrodE, an enlargement E* form lwhich is embedded infthebushing- A bell shaped-meinber-fM is connected to the lower en ds of th'e'ftubes'L and'K and has its lower end extending down -below the top ofthe :annular chamber Fa formed in the bot-tom of the member F and surrounding an upwardly .extending boss F?, in which is rformed the passage F leading to the low pressureescape pipe G. rA bushiig'N having orts N1 ad acent its inner e ge is secu to the .un er side of bushin Hz and forms a guide for vthe tube K while at the 2'0 same time it affords communication between the space between tubes K and J and the in-V terior of fitting F. Ports Kz and L1 are formed in the u per end of parts K and I .respectively so tiat the air admitted to the grr interior of tube H may pass into the upper end of tliepart L and thence tothe escape conduit. G and so that steam may pass from the outlet'C of the radiator u through the .space between' J and K and t ence throu h e ports K and Iinto the interior of t e I partL and from thence to the low pressure return. pipe G. -The lassae of steam from theradiator outlet C 'rec y pipe G through the port F is'V impeded by a .permanent water seal formed by the water of condensation in the annular recess Fs -into which the lower end .of the bell shaped (member M1 extends,A andirom which'the lwater of condensation isgfree to overflow Yinto the return conduit. The parts J and L are formed of material gh'aving relatively high coeicientsof thermal expansiom while the parts K and H are formed of material having a relatively low coeicient of thermal 4 5 expansion. In consequenceiof this arrangement the expansible part of the thermostatic actuatin mechanism is twice as long as each of t e pipes L and J and the sensitiv 'ness of the apparatus is corre ondingly inf50.creased. A-ir is admitted to t e interior of the. tube. H through port= H and pipe P* "leading from the outlet port of valve casingP. The valve casing P is prdvidedivith two air inlets P and P. The inlet P" receiving air 5 5 -from'the atmos here in the room warmed by n e5 tion permits of a limited communication be' at the lower end of.

Iinto the escapetot e exterior atmosphere.-

tween P and Ia and P1; The valve R is ventedfrom rotating whenthe knob R1. is rotated by en agementof the square portion pointer which engagesivit a d ial on the n practice the mechanism is preferably vso set and arranged that with substantially terior of member H from ports I2 vand P. the valve E will he held by the thermostatic mechanism in position to'permit just enough Then so set any substantial variation either in the room temperature directly or in the temperature ofA the external atmosphere in temperature of the ther'mstatic mechaiiism and in the degree of. openingof the `va1vel g Y adjusted that when the lair flowing into member' ou'gh port H is the s'ame as the desired a artment temper mostatic mechanism inayjberelatively' udjusted by. means of thefftlireaded connection E2 between the valteand the stem E. Ordinarily the thermostatic finech'anisni -vis 'so adjusted by means "of" key?" D that the vulve opens and closes-automatically in response to temperature variations but the key to manually and directly regulate: the ow of steam into the radiator. Under. ordinary circumstances'the regulation should be such that'all theeteam admitted tothe ratremely coldI weather -the radiator. is

valve E may be held open until steam enters the fitting "F. Steam tshoiil'd then be shut oil 'since 'a ffurther adinfissionv of' steam would not increase ithe heating capacity of the radiator but would the waterv seal in spacci-F. the steam entering fitting F can passito the escav G only by passing throu li the -y -pass to densation which includes the. water seal in trough F'. `This-by ass includes in 'the form shown the'space tween pi J 'and thermostatic mechanism causes it to close valve E regardless of the temperature ofthe ,which of course ultimately affects the r 00m` temperature, causes 'a corresponding change The mechanism should preferably be lsol temperature of the Ht r D and valve E may lbe used on occasionsv diator is condensed therein.' When as inei' operated at its maximum capacity the conduit the portion of the path o the water ofco'ii operated by the knurled knob. R? ournaledin thccasing I and inV threade engage.-l ment with the valve R. The valve Ris prc- R* of the va ve with the casing guide P. 4Preferably the knob Rl is rovidedwitlra Y equal quantities of air admitted to the in# steam to flowinto the radiator to maintain the desired temperature lin the a artment.

'es ature, 'the valve Ewill c ose port D. It will be understood. that the'valve'nnd ther- .l

result in steam'waste. The mechanism de-4 scribed will effect this, since on account of K and the conduit -formed by .t e hollow. member L. This flow of 'steam along the V1,098,815V4 y air admittedy through -port H5. At this instant the' mechanism operates therefore as a.'

thermostatic steam trap. y

The mode of operation of the arrange- 5 ment shown by Fig. 5 is much like that of the. construction shown' in Figs. 1 to 4 inclusite, but the mechanical arrangements differ in "a number of respects. In the arrangement ofFig. the inlet and outlet. passages 1o B and C .of the 'radiator Aare located at the bottom and'at opposite ends of the radiatom lThe valve casing D is arranged be- Y tween the inlet passage l5 and the steam supply ipe X as before, 'but the port-D" to whic 1 the steam supply pipe lea-ds, is located at the'bottom of the .casing and is directly controlled'by the valve E,'\\hich is adapted to seat aslbefore onv a port D, but in this `casethe port Dis at the.. inner and upper 2o endofthe o rt D5. ,lnvthis construct-ion the thermostat-tlc.mechanism is arranged Vabove the casing D. y'Ihe'valve stem Y 1 is attachedrat itsupper end to the. part L and provided at its lowerjend with an enlargementV E. .ThekvalveEwbears against this cnlargment andsecured inplace by a nut "'E `w ich. surro1 1nds the stern E? and" is Vthreaded into-ra; socket foi-media the valve F4 and'bears against the upper sideof the 3o? enlargement E. The .spring E. I extends betweenfthe nut E and the bushing H. vIn the .form shown, the member El is made of material of oor. heat conductivity andv slides in the s eeve D, which, in 4this case,

issecuredto the bushing H1. .At the. upper end,`,jjjthe' tubular" member H is; internally threadedto receive a bushing. Hhaving ports-H1 through -t'and also to receive an externally threaded portion S1. of'a. `fitting'r 40 S. The upperend of member VJ is-secured in 'bushing-...IHcv The' fitting. S is. provided withopposite dsposedpinlet passages S2 and S, in which are fitted washers Sf and S res-pectivcly, which serve as abutments 4 5 forxsprings S, which'. constantlytend to \seat valves T1. and T2 .respectivelyagainst v-iuilve seats S and S formed at the in'ner ends of the ports S2 andS3 respectively. The inner ends of the stems '.Il and T2 bear againstfan eccentrie'Ts'carried on ahollow shaftv which projects through the-i upper end 'offthe fitting S and hassecuredto it anjfQ eratin handle T41. By rotating the handle'rl't le'valves '-1l and Tz may be ad- Itwill observed that the-arrangech that as the handle is rotated to i oneof-thevalves to close, the other mmed in the'opening direction. The

key-1D mounted inthe shaft T and has Y ,its .'tiattened lower end entering a. kerf formed in the .upper endl of tuber L. .'By meansy qf this ar angement.'thet ube.-L may be rotated in an axially adjusted,

spect to a. 'nut L provided :wi which enteria kerf .formed iufthetnpper'cnd may b eregulated. The fitting F at the out-A let of the radiator differs from'thejjitting' with re rings Lf:

departing from the= spii Vlot. the tube K. Y By tlireadingthe tube L through the nut .L the actionof the valve l" of Fig. 1 in' thatbushing Hz isreplaced 76 by a cap 1*", wliicl1 has secured to its inner side 'a stenrhizcarrying a bell e'riink1M, which has its lower edge projecting into the l trough .F3 andlwhich serves the same purpose in forming a water s ealas does the bell. M ofFig. 1. The fitting is also nfovided with a port F leading from abovet e water sealuhich is formed inF the troughlF, and with a port G1, which leads ifrom the fitting at the head of the escape conduit.. (im( l 30 below theqvatciseal. A conduitV 1V 'runs' from the port F5 to a T coupling V3 which is connected; tofthe port S2 in the fitting S. The other branch of the 'coupling V? is connected toa conduit Vlwhichmay runito 9"- the external atmosphere.v -Aconduit WV runs from' the port Gr1 to al port' H8 :leading its4 lower end.

The general operationof the apparatus .9o shown in F 5 is.sfubstantiallirv identicalY in principle with theoperation shown in Fig.

' through the wall of the member H adjacent `1.' The water ofcondensationis free to flow from. the port Cinto the-escape conduitG through the water seal in Vtrtniszlifl;l .The 95 conduit V, 'fitting S, central passage inmemy ber L and the surrounding VVpassages between members L and `K,.and between members K Vand J, lo'wer end of chambered member H,

port H7, conduit XV, and port G1 form va by pass around the water seal. through which steam, wliich'muy issue from the outlet end of the radiator, travels when the radiator is operatedV at itsA maximum capacity. 4 The passage of'steam through this by pass, of course, heats up the tubes L.-K an d J of the roo vthermostatic mechanism and causes the-valve -tor seat. In normal operation the temperature of the members L, K and vJ' is regulated `by the temperatures and proportions ofthe 1l-0 an' passing into' the fitting S through-ports S2 and S3. Exceptwhen steam is'issuing' from the. radiator outlet C, practicallyjall of the air-which enters'the-port Sig-'counts from .the external atmosphere through the conduit V1. H y W5" Certain novel features of construction and Varrangement shownand desci'ibe d,-bu t not 'J claimed herein, are V claimed in' the`following Letters Patent: 893,339, granted July v14, 1-20 15208: !)(3,007,grantedJuneZS,1910;;988526,

grantedAp 'l 4.1911. a f -While the constructions-d possess excellent*mechanical andjfoperating 125 ties. it'willbe understped v inthe that changes i nay form of the..V apparatus 'the 'inreutjion.

. and I d( t wish the claimshereinafter 130 f made tobe'liiuited vto thc particular 4'forms shown more than is made'iieeessai-V bythe.

state of the' art.

Having now described my. inyei'itioinivhat I claim as new, and desire tofseure by Letters Patent is, 1

1. In a steam heating sfysteni, lthe'couibi- Y nation of a radiator "raving separate inlet and outlet passages, n esca ie. conduit `for conveying away from the radiator the steam `and water of condensation escaping fiom the `radiator through said outletpassage, a valve iii said inlet passage and therniostatic mechanism for operating said valve coinprising an expansible'mechanism arranged out 'of the path of the water of condensation escaping from the radiator and means -for causing steamissuing from saitlzoiitlet pas sa e to flow along a considerable extent of,

said expansible lmechanism before entering said escape conduit. f

2. In a steam heatingsystein, the combi# nation of a radiator rhaving-sepai'atc-iiilet and outlet passages, anV escape conduit into which the water of condensation may. pass from said outlet passaggi-,means peding the`loi`g, of steam from said outlet passage directly into escape conduit, a valve vin said inlet passage and thermostatic actuating mechanism for. the valve includ-V ingmeans arranged to formaby pass .co`iinection between said 'outlet passage and eslcape conduit about said impeding means through which steam escaping from'the radiator through said outletpassage passes to heat the thermostatic mechanism. 3; In ay steam heating system, the Acombination of a radiator having separate inlet andl outlet passages, an escape conduit intoy whichthe water of condensation may pass Y. from said outlet passage, means forproviding a water seal in the path of the water'of condensation from the outlet passage ofthe radiator to `said escape conduit, a valve in the inlet passage of the radiator and ther-v inostatic actuating mechanism for the valve includin expansiblcmechanism' and lheans arrang to foi-in a by pass-conneolibn be`lr tween 'said outlet. passagt; and escapclconduit about said water seal t rough vwhich steam issuing from the outlet passage -of the radiator flows along said expansible'n-mechanism.-

4. In asteam heating system, thc'combination of-a radiator having separate inlet-l and outlet passages, an escape-conduit into which `the water of condensation may pass ,from said outlet passage, means for-providing' a water seal in the .path of the water of 'condensation' from the outlet passage ofthe radiator to said escape' conduit, a valvein the inlet passage of the radiator and thermostatic actuating mechanism for the valve including. expansible mechanism and means for imarranged to forma by passv connection between said outletpassa' el and escape conduit about saidwater seal rouglivwhch steam issuing from the outlet passa ofthe radia- -to`r flows along said 'ex ansi le mechanism,

and means for introducingair into said by 5.In a vsteam lie'atingvsystem, the combination Vof 'n'. radiator having separate inlet;

ai'idoutlet passages, anescapc conduit into which the waterof condensation may pass from said outlet' passage, means for providing a waterA seal in the path of the water 'of condensation fromv the outlet passage of VVthe radiator to said escape conduit, a valve in the` inlet passage of the radiator and thermostatic'actuating mechanism for. the

valve., including enpansible mechanism,'and f means arranged to form aby pass connection betwee'nsaid outlet passage and escape conduit, .about said water seal through which steam issuing from the outlctpassa'ge of the radiator flows alongy said expansible mecha'- nism, and means for introducing airv of regulated teinperatureinto-said by pass. 6. I'n asteai'n heatingsystemthe combination' of aradiator having separate. inlet and outletpassages, an escape conduit into which 'the' water ofcondensation may pass from' lsaid outlet passage, means forproas f riding afwater seal in the path through 1 7. In a steam heating system, the combination of 'a radiator having separate inlet ,andV outlet passages, an escape conduitL into which thefwater of .condensation maypass from said outlet passage,`me ans for provid` ing a vwater seal in the path through which thefwater of condensationtra'vels from the outlet passage of the radiator to said esca e conduit, a' valve in the .inlet ssage of radiator, thermostaticr mechanism or actuating'the valve comprising a casing, expan-l `sible Vmechanism .located .within the and connections'from said casing `to, sai

outletfpassagc at one side of the water seal and to the escape.

air of regulatedY` temperature into said HARRY C. MALLORX.

' .Wm O. SmrirAN,

G. B. Annizic'iri.V

conduit at the other s ide' and means flor introducing, 

